| Business | Phone |
| Bourdelais Grinding Co 9146 Owensmouth Ave, Chatsworth 91311 | (805) 583-9966 |
| Chatsworth Grinding Co 21714 Lassen St, Chatsworth 91311 | (818) 700-1180 |
| Roy & Val Tool Grinding 10131 Canoga Ave, Chatsworth 91311 | (818) 341-2434 |
| Cal Grinding 9530 Owensmouth Ave, Chatsworth 91311 | (818) 709-3620 |
| Marpla Engineering 21828 Lassen St # B, Chatsworth 91311 | (818) 700-8505 |
| P O Grinding 9626 Lurline Ave # D, Chatsworth 91311 | (818) 772-8606 |
| Silco Engineering Surface 9601 Owensmouth Ave # 24, Chatsworth 91311 | (818) 407-0082 |
| West Valley Grinding Inc 20923 Plummer St, Chatsworth 91311 | (818) 341-3831 |